What is the sum of 4x^2+2x-54x 2 + 2x-54, x, squared, plus, 2, x, minus, 5 and 7x^2-5x+27x 2 - 5x+27, x, squared, minus, 5, x, plus, 2?
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Calculate Nnenia's mean quiz score. Her scores were: 18, 10, 20, 15, 16, 18, 10, 12, 18, and 11.
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